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DPS: High temperature polymer fuel cell has a record rate of degradation
According to recent reports from international media, Danish Power Systems (DPS) has been collaborating with and conducting tests at the Technical University of Denmark (DTU) and the University of Chemistry and Technology in Prague, Czech Republic. The company claims that its high-temperature polymer electrolyte membrane fuel cells (HTPEMFCs) have achieved an unprecedented level of operational stability, setting a new benchmark in degradation rate during testing.
The test was conducted under constant load conditions for 9,000 hours at a temperature of 160°C. The DPS test battery showed a degradation rate of just 0.5 μV/h, which translates to approximately 0.00008% per hour. In comparison, the reference membrane exhibited a significantly higher degradation rate of 2.6 μV/h. The full test cycle lasted 13,000 hours, during which the team tested both cross-linked and linear polybenzimidazole (PBI) membranes. The average voltage decay rates were recorded as 1.4 μV/h and 4.6 μV/h, respectively.
DPS specializes in producing membrane electrode assemblies (MEAs), and is one of the few companies capable of manufacturing PBI materials used in fuel cell membranes. These materials offer superior thermal resistance compared to traditional PEM fuel cells, allowing HTPEM membranes to operate efficiently at temperatures between 160°C and 200°C.
DPS fuel cell stacks utilize methanol as a fuel source, which is relatively inexpensive and easier to extract from renewable biological resources. To develop these stacks, DPS partnered with SerEnergy in Aalborg, Denmark, and received support through the EUDP project funded by the Danish Ministry of Energy. SerEnergy also contributed to achieving excellent operational stability and minimal degradation in the fuel cell stacks.
In recent years, DPS has focused on expanding its export of fuel cell products. The company has made significant progress in producing ultra-high-temperature plastic membranes for batteries. According to DPS, this technology is now highly mature and is expected to enter commercial operation soon. With continued innovation and strategic partnerships, DPS is well-positioned to play a key role in the future of sustainable energy solutions.